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Commit e30f5640 authored by Martin KaFai Lau's avatar Martin KaFai Lau Committed by Alexei Starovoitov
Browse files

bpf: Add BPF_LD_IMM64 to the line_info test 



This patch adds a BPF_LD_IMM64 case to the line_info test
to ensure the kernel rejects linfo_info.insn_off pointing
to the 2nd 8 bytes of the BPF_LD_IMM64.

Signed-off-by: default avatarMartin KaFai Lau <kafai@fb.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent fdbaa0be

tools/testing/selftests/bpf/test_btf.c

+27 −0
Original line number Diff line number Diff line
@@ -4253,6 +4253,33 @@ static struct prog_info_raw_test { 
	.expected_prog_load_failure = true,

},



{

	.descr = "line_info (Zero bpf insn code)",

	.raw_types = {

		BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */

		BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 64, 8),	/* [2] */

		BTF_TYPEDEF_ENC(NAME_TBD, 2),			/* [3] */

		BTF_END_RAW,

	},

	BTF_STR_SEC("\0int\0unsigned long\0u64\0u64 a=1;\0return a;"),

	.insns = {

		BPF_LD_IMM64(BPF_REG_0, 1),

		BPF_EXIT_INSN(),

	},

	.prog_type = BPF_PROG_TYPE_TRACEPOINT,

	.func_info_cnt = 0,

	.line_info = {

		BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10),

		BPF_LINE_INFO_ENC(1, 0, 0, 2, 9),

		BPF_LINE_INFO_ENC(2, 0, NAME_TBD, 3, 8),

		BTF_END_RAW,

	},

	.line_info_rec_size = sizeof(struct bpf_line_info),

	.nr_jited_ksyms = 1,

	.err_str = "Invalid insn code at line_info[1]",

	.expected_prog_load_failure = true,

},



{

	.descr = "line_info (No subprog. zero tailing line_info",

	.raw_types = {